Question: When did they start selling petrol in liters in the country Prince of Thieves, whose title character John is depicted alongside, was made?
Context: Document 1: John, King of England: Nineteenth-century fictional depictions of John were heavily influenced by Sir Walter Scott's historical romance, Ivanhoe, which presented "an almost totally unfavourable picture" of the king; the work drew on Victorian histories of the period and on Shakespeare's play. Scott's work influenced the late 19th-century children's writer Howard Pyle's book The Merry Adventures of Robin Hood, which in turn established John as the principal villain within the traditional Robin Hood narrative. During the 20th century, John was normally depicted in fictional books and films alongside Robin Hood. Sam De Grasse's role as John in the black-and-white 1922 film version shows John committing numerous atrocities and acts of torture. Claude Rains played John in the 1938 colour version alongside Errol Flynn, starting a trend for films to depict John as an "effeminate ... arrogant and cowardly stay-at-home". The character of John acts either to highlight the virtues of King Richard, or contrasts with the Sheriff of Nottingham, who is usually the "swashbuckling villain" opposing Robin. An extreme version of this trend can be seen in the Disney cartoon version, for example, which depicts John, voiced by Peter Ustinov, as a "cowardly, thumbsucking lion". Popular works that depict John beyond the Robin Hood legends, such as James Goldman's play and later film, The Lion in Winter, set in 1183, commonly present him as an "effete weakling", in this instance contrasted with the more masculine Henry II, or as a tyrant, as in A. A. Milne's poem for children, "King John's Christmas".
Document 2: Robin Hood: Prince of Thieves: Principal exteriors were shot on location in the United Kingdom. A second unit filmed the medieval walls and towers of the Cité de Carcassonne in the town of Carcassonne in Aude, France, for the portrayal of Nottingham and its castle. Locksley Castle was Wardour Castle in Wiltshire -- restored in an early shot using a matte painting. Marian's manor was filmed at Hulne Priory in Northumberland. Scenes set in Sherwood Forest were filmed throughout England: Burnham Beeches in Buckinghamshire was used for the outlaws' encampment, Aysgarth Falls in Yorkshire for the fight scene between Robin and Little John, and Hardraw Force in North Yorkshire was the location where Marian sees Robin bathing. Sycamore Gap on Hadrian's Wall was used for the scene when Robin first confronts the sheriff's men. Chalk cliffs at Seven Sisters, Sussex were used as the locale for Robin's return to England from the Crusades.
Document 3: Metrication in the United Kingdom: 1970 Electric Cable Makers Confederation, British Aerospace Companies Limited drawing and documentation, London Metal Exchange, flat glass 1971 Paper and board, National Coal Board designs, pharmaceuticals 1972 Paint industry, steel industry, building regulations 1974 Textile and wool transactions, leading clothing manufacturers adopt dual units 1975 Retail trade in fabrics and floor coverings, post office tariffs, medical practice 1976 Bulk sales of petroleum, agriculture and horticulture 1977 Livestock auctions 1978 Solid fuel retailing, cheese wholesaling, bread, London Commodity Market
Document 4: Boys' Brigade Gazette: The Boys' Brigade Gazette is a quarterly magazine printed regularly since 1889 in the United Kingdom for the officers and leaders of the Battalions and Companies of the Boy's Brigade in the UK and Ireland.
Answer: 1976
Reasoning steps: Who was John depicted alongside? Answer: Robin Hood
where was Robin Hood prince of thieves made Answer: the United Kingdom
the United Kingdom >> follows Answer: UK
when did UK start selling petrol in litres Answer: 1976